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International Journal of Latest Research in Science and Technology

DOI:10.29111/ijlrst   ISRA Impact Factor:3.35

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KINETIC DESCRIPTION AND REACTION CONTROL INVESTIGATION WHEN GASIFYING A BIOMASS WASTE

Research Paper Open Access

International Journal of Latest Research in Science and Technology Vol.4 Issue 5, pp 22-31,Year 2015

KINETIC DESCRIPTION AND REACTION CONTROL INVESTIGATION WHEN GASIFYING A BIOMASS WASTE

Lat Grand NDIAYE, Ammar Bensakhria, Anissa Khelfa,Oumar Sock

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Received : 17 September 2015; Accepted : 02 October 2015 ; Published : 31 October 2015

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Article No. 10565
Abstract

Gasification is one of the most important methods in the harmless disposal of biomass. The gasification characteristics of biomass waste and an increasing number of biomass waste gasification plants provide the possibility of energy disposal with (heat or electricity). In this study, the reactivity of biomass char was investigated at various temperatures and CO2 concentrations in order to evaluate the diffusion coefficients and mass transfer according to the shrinking core model (SCM). Results show that the reaction control is based on mass diffusion showing that at the high temperature, 1000 °C, carbon conversion was not achieved. The chemically controlled reaction have been shown in comparing total reaction time, time for diffusion, diffusion coefficient and mass transfer coefficient. And according to this reaction control, the effects of reactant pressure on the kinetic parameters of the char reaction at temperatures 900, 950 and 1000 °C where chemical reactions alone controlled the conversion rates were computed and validated by the simple global model (an Arrhenius). The activation energies computed in our study were based in two models, the SCM and the volume reaction model (VRM).

Key Words   
Biomass waste, Char, Gasification, Kinetic, Fixed bed reactor

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To cite this article

Lat Grand NDIAYE, Ammar Bensakhria, Anissa Khelfa,Oumar Sock , " Kinetic Description And Reaction Control Investigation When Gasifying A Biomass Waste ", International Journal of Latest Research in Science and Technology . Vol. 4, Issue 5, pp 22-31 , 2015

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